package Demo4;

import com.sun.source.tree.NewArrayTree;

import java.util.Scanner;

public class Main5 {
static volatile int flag=0;

    public static void main(String[] args) {
Thread t1=new Thread(()->{
   while(flag==0){

   }
    System.out.println("t1线程结束");
});
Thread t2=new Thread(()->{
    System.out.println("请输入flag：");
    Scanner scanner= new Scanner(System.in);
    flag=scanner.nextInt();
});
t1.start();
t2.start();

    }
}
